Aeroplane construction



Aug. 311926. 1,598,118.

T. BORGAN AEROPLANE CONSTRUCTION Filed Nov. 20, @1925 W a. INVENTOR jfBolycbwt/ ATTORNEYS Patented Aug. 31, 1926.

hurra snares THORALF BORGAN, OF BROOKLYN, NEW "if'fiitll t.

AEROPLANE CONSTRUGTION.

Application filed November wires which are adapted to support a plu rality of sections of thin metal strips having laterally projecting lugs engaging around the wires.

This invention will be best understood from a consideration of the following detailed description, in view of the accompanying drawings forming apart of the specification; nevertheless it is to be understood that the invention is not confined to the disclosure, being susceptible of such changes and modifications which shall define no material departure from the salient features of the invention as expressed in the appended claims.

In the drawings Figural is a plan view of an aeroplane constructed in accordance with the princi- 'ples of my invention. w

Figure 2 is a' longitudinal side view of the aeroplane.

Figure 3 is a longitudinal vertical section of the aeroplane.

Figure 4 is a transverse vertical section taken along the line 4-4 of Figure 1.

Figure 5 is an enlarged vertical section taken along the line 55 of Figure 1. V

Figure 6 is an enlarged fragmentary plan view. of the main supporting surface.

Figure 7' is a section of the supporting surface shown in Figure 6 and taken along the line 7-7 of Figure 6.

Referring more particularly to the drawings, 10 designates the fuselage of an aeroplane which is adapted to supportthe engines 11 and 12 connected by means of clutches to a drive shaft 13 carried by bearings 14. At the forward end of the shaft is rigidly secured a propeller 15. 'The' forward end of. the fuselage is'provided with a cockpit having openings 16 and for the 20, 1925. Serial No.

accommodation of the opr-zrators of the aeroplane. The fuselage is carried by means of the running gears 18 and 19.

Secured rigidly in any approved manner to the body 10 are a pair of planes 20 and 21 at the rear end of the machine. These planes'extend transversely of the body. and are connected together at their ends as shown at 22 so that the pair of planes on opposite sides of the body are substantially ll-shaped. A rudder 23 is mounted at the rear of the machine and in aline with the longitudinal axis of the same. This rudder is provided with arms 24 connected to cables 25 which are carried forwardly to a pointadjacent the seat of the aviator. At the forward end of the aeroplane and in advance of the opening 16 is mounted a shaft 27 which passes through the body 10 and is supported in bearings carried by said body.

Rotatably mounted on the shaft 27 are a pair of elevators 2S and 29, an elevator being located on each side of the body. The elevator 29 is provided with a pair of diametrically disposed arms 30 and 31 to the ends of which is connected a cable 32. This cable is entrained over a pulley 33 mounted on a shaft 34 which is operated by a control stick 35. The elevator 28 is likewise provided with a pair of arms similar to the arms 30 and 31 of the elevator 29, to the ends of which is connected a cable 36 which is trained over a pulley 37 carried by a shaft. This shaft is operated by a stick 38.

As shown in Figure 1 sticks and 38 are located in spaced relation and adjacent the forward seat and adjacent the opening 16. The outer ends of the shaft 27 is braced by wires 39 and 40 which extend from a sleeve 41 at each end of the shaft and inwardly in the V-shaped formation and is connected as shown at 42 to the body member 10. It will be seen by the separate control sticks 35 and and 21 as shown. at 49. Turn buckles 47 a incorporated in the wires 47 and 50 areadapted to adjust the tension on said wires.

Reinforcing wires 50 which support the rear ends of the wires 46 extend from the outer connected ends 22 of the planes 20 and21 as shown at 51 to the rear end of the body as shown at v52. The longitudinal wires 46 decrease in length from the body 10 outwardly in. spaced relation upon opposite sides of the body and are connected to the wires 47 and 50 in any approved manner, the ,connection being such that the wires 46 are located substantially in the same plane with the wires 47 and 50.

The supporting surface is formed of thin strips 53 formed from metal sheets. These strips extend longitudinally of the supporting surface and are provided with a plurality of lugs 54 pro ecting laterally from opposite sides of the strips and these lugs as shown in Figure 7 are bent downwardly posed wires, other wires definingl and curved around the wires 46 inembracing relation with the wires 46.

Inthe operation of the plane the rudder 23 as is usual is controlled by the cables 25 from the point of vantage adjacent the seat of the aviator. The elevators 28 and 29 which are located directly at the rear of the propeller 15 are oscil an arc of a circle simultaneously for causing the plane ,to be elevated or lowered. Since the planes are operated independently through the levers of the control sticks 35 and 38 either one may be operated for bank ing the plane. Due to the fact that the controls 28 and 29 are located directly at the rear of. the propeller the air thrust of the propeller used in combination with the disposition of said controls will be more effective for controlling the various positions of the plane than where the propelleris located at some distance from the controls as is ordinarily shown in the-types of planes now in use.

What I claim is 1. In an aeroplane, a liftin surface com; posed of a plurality of longitudinally disthe periphery of the lifting surface, t e longitudinally disposed wires being rigidly con ated through ripher(y posed body, planes extending transversely of the body adjacent one nd, a lifting surface passing between the planes, said lifting surface comprising wires defining the boundaries of the lifting surface, and extending from the op osite ends of the planes towards the rear and front of the body and connected thereto, longitudinally spaced wires havin their ends connectedto the boundary w1res, and stripsof sheet metal connected to the longitudinally disposed wires.

4. In an aeroplane, a longitudinally disposed body, planes-extending transversely of the body adjacent one end, a lifting surface passing between the planes, said lifting surface comprising wires defining the boundaries ofthe lifting surface andextending from the opposite ends of the planes towards the rear and front of the body and connected thereto, longitudinally spaced wires having their ends connected to the boundary wires, and strips of sheet metal connected to the longitudinally disposed wires, said strips of metal having lugs projecting laterally from the opposite edges and bent around the longitudinally disposed wires adjacent the longitudinal edges of the strips.

5. In an aeroplane, a lon itudinally disposed body,.planes extending transversely of the body adjacent one end, a lifting surface passing between the planes, said lifting surface comprising wires defining the boundaries Qffthe lifting surface and extending from the opposite ends of the planes toward the rear'and front of the body and connected thereto, longitudinally spaced wires having their ends connected to the boundary wires, and strips of sheet metal connected to the longitudinally disposed wires, said strips of metal having lugs projecting laterally from the opposite edges and bent around the longitudinally disposed.

wires adjacent the longltudinal edges of the strips, said lugs being located in spaced relation and staggered with respect. to lugs .on an adjacent strip so that the lugs of one strip when embracin a wire will neatly fit between the pair of lugs on an adjacent strip which are bent around the same wire.

6. In an aeroplane, a lifting surface composed of a pluralityof longltudinally disposed wires, other wires definin the peof the lifting surface, the longitudinally isposed wires being rigidly connected at their ends to the second mentioned wires, and strips of sheet metal disposed longitudinally and connected to the longitudinally disposed wires, the second mentioned wires being provided with means for creating a tension thereon.

THORALF BOR'G'AN. 

